Document Detail

Effectiveness of DDT residual sprays when delivered at specific pressures.
MedLine Citation:
PMID:  14457256     Owner:  NLM     Status:  MEDLINE    
In an attempt to simplify one element in the practical operation of malaria eradication programmes, experiments were conducted to determine the relative effectiveness of residual DDT delivered at both high and low pressures. The relative effectiveness of insecticidal spray patterns delivered from standard nozzle tips at three different discharge pressures but at approximately the same rate and angle of discharge was measured by bio-assay with non-resistant Anopheles quadrimaculatus and by chemical assay. The insecticide used was a 3.75% suspension of 75% wettable powder DDT. Spray patterns delivered at 10 p.s.i. (0.7 atm.) had a killing effectiveness comparable to that achieved at 20 and 40 p.s.i. (1.4 and 2.8 atm.) even though the killing range was not as great as at the higher discharge pressures. Results of the chemical assay indicated considerable variation in the amount of insecticide deposited per square centimetre of pattern area.
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Bulletin of the World Health Organization     Volume:  25     ISSN:  0042-9686     ISO Abbreviation:  Bull. World Health Organ.     Publication Date:  1961  
Date Detail:
Created Date:  1962-12-01     Completed Date:  1998-11-01     Revised Date:  2010-10-26    
Medline Journal Info:
Nlm Unique ID:  7507052     Medline TA:  Bull World Health Organ     Country:  Not Available    
Other Details:
Languages:  eng     Pagination:  219-26     Citation Subset:  OM    
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MeSH Terms
Malaria / prevention & control*
Reg. No./Substance:

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